twofold vs three-fold

twofold and three-fold both are adjectives.

Word	Noun	Adjective	Verb	Adverb
twofold	No	Yes	No	Yes
three-fold	No	Yes	No	No

As adjectives, twofold and three-fold are synonyms defined as:

twofold and three-fold: having more than one decidedly dissimilar aspects or qualities

Other synonyms of twofold include double, dual, threefold, treble, two-fold.

twofold (adjective)	three-fold (adjective)
twice as great or many	three times as great or many
having more than one decidedly dissimilar aspects or qualities	having more than one decidedly dissimilar aspects or qualities

twofold (adverb)	three-fold (adverb)
by a factor of two